<template>
    <div>
        <!-- 顶部滑动条 -->
        <div id="slider" class="mui-slider">
            <div id="sliderSegmentedControl"
            class="mui-scroll-wrapper mui-slider-indicator
            mui-segmented-control mui-segmented-control-inverted">
                <div class="mui-scroll">
                    <a :class="['mui-control-item', item.id === 0 ? 'mui-active':'']"
                    v-for="item in cates" :key="item.id"
                    @click="getImages(item.id)">{{item.title}}</a>
                </div>
            </div>
        </div>
        <!-- 图片懒加载 -->
        <ul class="image-list">
          <router-link v-for="item in images" :key="item.id"
          :to="'/home/photoinfo/'+item.id" tag="li">
            <img v-lazy.container="item.img_url">
            <div class="info">
                <h1 class="info-title">{{item.title}}</h1>
                <div class="info-body">{{item.zhaiyao}}</div>
            </div>
          </router-link>
        </ul>
    </div>
</template>

<script>
import { Toast } from 'mint-ui';
// 导入mui的js文件
import mui from '../../lib/mui/js/mui.min';

export default {
  data() {
    return {
      cates: [],
      images: [],
    };
  },
  created() {
    this.getAllCategory();
    this.getImages(0);
  },
  mounted() {
    // 初始化滑动控件
    mui('.mui-scroll-wrapper').scroll({
      deceleration: 0.0005, // flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods: {
    getAllCategory() {
      this.$http.get('api/getimgcategory').then((res) => {
        const result = res.body;
        if (result.status === 0) {
          result.message.unshift({ title: '全部', id: 0 });
          this.cates = result.message;
        } else {
          Toast('加载图片列表数据失败……');
        }
      });
    },
    getImages(cateId) {
      this.$http.get(`api/getimages/${cateId}`).then((res) => {
        if (res.body.status === 0) {
          this.images = res.body.message;
        } else {
          Toast('图片加载失败');
        }
      });
    },
  },
};
</script>

<style lang="scss" scoped>
*{
    touch-action: pan-y;
}
.image-list{
    list-style-type: none;
    margin: 0;
    padding: 0;
    padding:10px;
    padding-bottom:0px;
    li{
        background-color: #ccc;
        text-align: center;
        margin-bottom: 10px;
        box-shadow: 0 0 9px #999;
        position: relative;
        img{
            width:100%;
            vertical-align: middle;
        }
        image[lazy=loading] {
            width: 40px;
            height: 300px;
            margin: auto;
        }
        .info{
            position: absolute;
            bottom: 0px;
            color: white;
            text-align: left;
            background-color: rgba(0,0,0,0.4);
            max-height: 84px;
            .info-title{
                font-size: 14px;
            }
            .info-body{
                font-size: 13px;
            }
        }
    }
}

</style>

